What do 99h and 99v mean on tires?

1 Answers
MaggieAnn
07/30/25 9:52am
99 is the load index of the tire, indicating a maximum load capacity of 775 kilograms. The letters v and h represent speed ratings, where v denotes a maximum designed speed of 240 kilometers per hour, and h represents 210 kilometers per hour. Additional information is as follows: 1. Composition of tires: Tires are made of rubber and are a crucial component of automobiles, playing a key role. 2. Functions of tires: Tires bear the entire weight of the vehicle and withstand the loads imposed by the car. The shape and quality of the tires determine the level of adhesion between the vehicle and the road surface during driving. Tires also help reduce vibrations generated while driving, ensuring passenger comfort inside the vehicle, while also protecting automotive components and extending their service life. Additionally, tires contribute to lowering interior noise levels. 3. Tire specifications: The specifications of tires are typically indicated on the sidewall. For example, a tire marked as 205/55-R16 signifies a tire width of 205mm, an aspect ratio of 55, R indicating a radial tire, and 16 representing a tire size of 16 inches. Most family cars are equipped with 16-inch tires.
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